Gallium/Water under Ultrasound radiation

[matthias noske]

Hello,
I've a ultrasonic cleaning bath.
In this I've done liquid gallium with water.
After starten the bath, small liquid droplets of gallium were created druing
the acoustic radiation.
After a few minutes the water was completed filled with this droplets and
particles and it was no more possible to see through it.
After deactivating the bath, the droplets/ particles fell down and the water
was clean again. This means that the acoustic radiation force holds the
particles/droplets stable in the liquid.

Now I want the same thing again, but this time I want water droplets in
gallium.
I fact of this former experiment I think It is possible to dow this.
I put water and liquid gallium in glas and ultrasonicate it but this time
from above so that the water will be broke off and build small droplets in
the gallium.

But this is quite more complicate for me to realize than the other
experiment, I need for this special equipment, so I want to ask you first
about your opinion if this is realiazable before I start spending time,
money for someothing



Matthias

[tadchem]

Post by matthias noske
Hello,
I've a ultrasonic cleaning bath.
In this I've done liquid gallium with water.
After starten the bath, small liquid droplets of gallium were created druing
the acoustic radiation.
After a few minutes the water was completed filled with this droplets and
particles and it was no more possible to see through it.
After deactivating the bath, the droplets/ particles fell down and the water
was clean again. This means that the acoustic radiation force holds the
particles/droplets stable in the liquid.
Now I want the same thing again, but this time I want water droplets in
gallium.
I fact of this former experiment I think It is possible to dow this.
I put water and liquid gallium in glas and ultrasonicate it but this time
from above so that the water will be broke off and build small

...

droplets in

Post by matthias noske
the gallium.
But this is quite more complicate for me to realize than the other
experiment, I need for this special equipment, so I want to ask you first
about your opinion if this is realiazable before I start spending time,
money for someothing

I have not been able to find any references to suspensions of water
*in* liquid metal, but that does not mean that it cannot happen. The
surface energy (the soo-called 'surface tension') between the gallium
and the water should be the same. The trick is that the speed of sound
in gallium (2740 m/s at 293.15 K):
http://en.wikipedia.org/wiki/Gallium
is considerably higher than in water (about 1500 m/s at 293.15 K):
http://www.lsbu.ac.uk/water/explan2.html#sound

That means that you will have to adjust the frequency of your sonicator
accordingly (if you can). You will also have to use the reverse ratio
of volumes of gallium and water that you used in the metal-in-water
suspensions - it won't do any good if your water droplets in the
gallium are close enough together that they touch.
.
.
Tom Davidson
Richmond, VA

[Uncle Al]

Post by matthias noske
Hello,
I've a ultrasonic cleaning bath.
In this I've done liquid gallium with water.
After starten the bath, small liquid droplets of gallium were created druing
the acoustic radiation.
After a few minutes the water was completed filled with this droplets and
particles and it was no more possible to see through it.
After deactivating the bath, the droplets/ particles fell down and the water
was clean again. This means that the acoustic radiation force holds the
particles/droplets stable in the liquid.
Now I want the same thing again, but this time I want water droplets in
gallium.
I fact of this former experiment I think It is possible to dow this.
I put water and liquid gallium in glas and ultrasonicate it but this time
from above so that the water will be broke off and build small droplets in
the gallium.
But this is quite more complicate for me to realize than the other
experiment, I need for this special equipment, so I want to ask you first
about your opinion if this is realiazable before I start spending time,
money for someothing

...

Look up "phase inversion" in making butter from cream.